The House of Darkness is rather unsung as far as Griffith’s short films go. It’s about the soothing effect of music upon a mentally deranged man, one which becomes a major boon when he breaks into the home of a former nurse. While the video above cites Lionel Barrymore and Lillian Gish as the stars, it is Claire McDowell as the nurse and Charles Hill Mailes as the mentally ill patient who are the real stars of the show, beautifully underplaying parts which could have easily turned hammy.
Also am I the only one who thinks the shot set-up at 9 minutes and 56 seconds in looks a lot like the famous scene from James Whale’s Frankenstein where Karloff breaks into the bride’s chamber? The use of suspense there, with the woman unaware of the potential danger behind her, is very similar between the two movies.